CVE-2026-1973Free5GC SMF establishPfcpSession null pointer dereference
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It affects n/a Free5GC. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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A vulnerability was determined in Free5GC up to 4.1.0. The impacted element is the function establishPfcpSession of the component SMF. Executing a manipulation can lead to null pointer dereference. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized. It is best practice to apply a patch to resolve this issue.
- CVSS
- 5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
- Weakness (CWE)
- CWE-476, CWE-404
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulDB
- NVD analysis
- Analyzed
- Record last updated
- Feb 23, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
n/a Free5GC free5gc:free5gc | 4.0; 4.1.0 | CNA record |
free5gc free5gc free5gc:free5gc | through 4.1.0 | NVD |
References
- https://vuldb.com/?id.344495vdb-entry, technical-description, third-party-advisory
- https://vuldb.com/?ctiid.344495signature, permissions-required, vdb-entry
- https://vuldb.com/?submit.743236third-party-advisory, exploit, vdb-entry
- https://github.com/free5gc/free5gc/issues/815issue-tracking, exploit, vendor-advisory
- https://github.com/free5gc/free5gc/issues/815#issue-3832032062exploit, issue-tracking, vendor-advisory
- https://github.com/free5gc/smf/pull/189issue-tracking, patch
- https://github.com/free5gc/free5gc/product
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.